only 36 here, but that's because i install batches of 20 or 30 apps at a time to test them out (thank you "top app" threads!), then remove most of them as i find them useless, ugly, etc. as a windows guy i'm just used to rebooting after stuff like that. probably unnecessary.
i also installed startup auditor and wanted to test that a few times recently.
all reboots were for my own piece of mind, however. no problems so far.
i'm going to try to go all of next week now that i'm *almost* done playing with my new toy.